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Removal of Permethrin and Bifenthrin...

Hernandez, Ernesto Alejandro,

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Removal of Permethrin and Bifenthrin Insecticides from Runoff Water by Activated Carbon Adsorption /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Removal of Permethrin and Bifenthrin Insecticides from Runoff Water by Activated Carbon Adsorption // Ernesto Alejandro Hernandez.
作者:	Hernandez, Ernesto Alejandro,
面頁冊數:	1 electronic resource (90 pages)
附註:	Source: Masters Abstracts International, Volume: 86-02.
Contained By:	Masters Abstracts International86-02.
標題:	Environmental engineering. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31299755
ISBN:	9798383589281

Removal of Permethrin and Bifenthrin Insecticides from Runoff Water by Activated Carbon Adsorption /
Hernandez, Ernesto Alejandro,

Removal of Permethrin and Bifenthrin Insecticides from Runoff Water by Activated Carbon Adsorption /Ernesto Alejandro Hernandez. - 1 electronic resource (90 pages)

Source: Masters Abstracts International, Volume: 86-02.

Among the hundreds of pesticides and insecticides, pyrethroids-particularly permethrin and bifenthrin, have become very popular due to their high toxicity to insects and low toxicity to humans, leading to extensive use in both agriculture and urban areas. Pyrethroids have no discharge limits because of this, leading to a negative impact on surrounding ecosystems due to their high toxicity to fish and aquatic life. Due to their low solubility and long half-lives, they are prominent in the environment long after application with a high potential for getting transported in runoff water to nearby water bodies. In this study, DSR-C reactivated carbon from Calgon Carbon was tested as an adsorbent for permethrin and bifenthrin from deionized water. Pyrethroid samples were extracted from water by liquid-liquid extraction and analyzed using a UV-vis spectrophotometer. Isotherm data was best represented by the Langmuir model suggesting single-layer adsorption with an adsorption capacity of 149 mg/g for permethrin and 0.822 mg/g for bifenthrin. Permethrin adsorption was studied further in solutions containing 200 mg/L of sulfate and 10 mg/L of nitrogen, phosphorus, and potassium fertilizer nutrients to simulate realistic agricultural runoff conditions. Across all three water matrices used (DI water, 10 mg/L N-P-K, and 200 mg/L sulfate), kinetic data for permethrin adsorption was best represented by the pseudo-second order kinetic model with similar kinetic rates and equilibrium capacities. Isotherm data represented by the Langmuir model resulted in an average adsorption capacity of 155 ± 39 mg/g across three different water matrices. Adsorption with DSR-C is an effective treatment process for permethrin in agricultural runoff water.

English

ISBN: 9798383589281Subjects--Topical Terms:

548583
Environmental engineering.
Subjects--Index Terms:

Activated carbon

Removal of Permethrin and Bifenthrin Insecticides from Runoff Water by Activated Carbon Adsorption /
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520 $a Among the hundreds of pesticides and insecticides, pyrethroids-particularly permethrin and bifenthrin, have become very popular due to their high toxicity to insects and low toxicity to humans, leading to extensive use in both agriculture and urban areas. Pyrethroids have no discharge limits because of this, leading to a negative impact on surrounding ecosystems due to their high toxicity to fish and aquatic life. Due to their low solubility and long half-lives, they are prominent in the environment long after application with a high potential for getting transported in runoff water to nearby water bodies. In this study, DSR-C reactivated carbon from Calgon Carbon was tested as an adsorbent for permethrin and bifenthrin from deionized water. Pyrethroid samples were extracted from water by liquid-liquid extraction and analyzed using a UV-vis spectrophotometer. Isotherm data was best represented by the Langmuir model suggesting single-layer adsorption with an adsorption capacity of 149 mg/g for permethrin and 0.822 mg/g for bifenthrin. Permethrin adsorption was studied further in solutions containing 200 mg/L of sulfate and 10 mg/L of nitrogen, phosphorus, and potassium fertilizer nutrients to simulate realistic agricultural runoff conditions. Across all three water matrices used (DI water, 10 mg/L N-P-K, and 200 mg/L sulfate), kinetic data for permethrin adsorption was best represented by the pseudo-second order kinetic model with similar kinetic rates and equilibrium capacities. Isotherm data represented by the Langmuir model resulted in an average adsorption capacity of 155 ± 39 mg/g across three different water matrices. Adsorption with DSR-C is an effective treatment process for permethrin in agricultural runoff water.
546 $a English
590 $a School code: 0506
650 4 $a Environmental engineering. $3 548583
650 4 $a Agricultural engineering. $3 3168406
650 4 $a Organic chemistry. $3 523952
653 $a Activated carbon
653 $a Adsorption
653 $a Bifenthrin
653 $a Permethrin
653 $a Pyrethroid
690 $a 0775
690 $a 0539
690 $a 0490
710 2 $a University of Nevada, Las Vegas. $b Civil and Environmental Engineering and Construction. $e degree granting institution. $3 3826134
720 1 $a Marti, Erica $e degree supervisor.
773 0 $t Masters Abstracts International $g 86-02.
790 $a 0506
791 $a M.S.E.
792 $a 2024
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